CN209494868U - Single cylinder double-piston hydraulic damping device - Google Patents
Single cylinder double-piston hydraulic damping device Download PDFInfo
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- CN209494868U CN209494868U CN201822194281.5U CN201822194281U CN209494868U CN 209494868 U CN209494868 U CN 209494868U CN 201822194281 U CN201822194281 U CN 201822194281U CN 209494868 U CN209494868 U CN 209494868U
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- damping device
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Abstract
The utility model relates to a kind of hydraulic damper, in particular to a kind of single cylinder double-piston hydraulic damping device.The utility model provides following technical solution: a kind of single cylinder double-piston hydraulic damping device, it include column and the cylinder body with inner cavity, there is free-piston in cylinder body and extend to the intracorporal driving piston of cylinder, piston is driven to drive by piston rod, inner cavity is divided into air cavity and fluid chamber by free-piston, driving piston is in fluid chamber, there is sealing ring between the outer peripheral surface and inner cavity of free-piston, at least one set of cricoid pit is offered on the outer peripheral surface of free-piston, is marked with lubricating grease in the pit.By adopting the above technical scheme, the single cylinder double-piston hydraulic damping device for providing a kind of high lubricating effect, preventing ring wear, prolonging the service life.
Description
Technical field
The utility model relates to a kind of hydraulic damper, in particular to a kind of single cylinder double-piston hydraulic damping device.
Background technique
Single casing hydraulic damper is a kind of common components of automobile, primarily to keeping the vibration of vehicle frame and vehicle body rapid
Decaying, ride comfort and comfort when so as to improve running car.
Traditional single casing hydraulic damper mainly by columnar cylinder body, set on the intracorporal free-piston of cylinder and has piston
Bar simultaneously extends to the intracorporal driving piston composition of cylinder.The intracorporal space of cylinder is divided into gas chamber and liquid chamber by free-piston, is driven
Piston is then in sliding in liquid chamber.In use, the driving piston with piston rod is in sliding in cylinder body, from
Being driven power also by piston can move in cylinder body, and free-piston changes the capacity of gas chamber when moving, has compensation
Drive the volume of piston inlet and outlet cylinder.
In order to promote that there is leakproofness between the gas chamber of cylinder body and liquid chamber, it will usually in free-piston and cylinder body
Sealing ring (annular recess being offered on the outer peripheral surface of free-piston, sealing ring is installed in the annular recess) is set between wall.
Free-piston is in cylinder body when axially sliding, and is had biggish friction between sealing ring and inboard wall of cylinder block, be will lead to sealing ring
It is impaired, thus loss of seal.Those skilled in the art in order to prevent sealing ring by excessive friction, it will usually by sealing ring
Outer smearing lubricating grease (such as silicone oil), the lubricating grease inevitably will appear during smearing by manually smearing and smeared non-uniform feelings
Condition, and if while smearing lubricating grease be stained with sundries, not only will not have lubricating action to sealing ring, will cause sealing ring instead
Premature abrasion.
Summary of the invention
In view of the deficienciess of the prior art, the utility model provide a kind of high lubricating effect, prevent ring wear,
The single cylinder double-piston hydraulic damping device to prolong the service life.
To achieve the above object, the utility model provides following technical solution: a kind of single cylinder double-piston hydraulic shock-absorption dress
It sets, includes column and the cylinder body with inner cavity, there is free-piston in cylinder body and extend to the intracorporal driving piston of cylinder, drive
Piston is driven by piston rod, and inner cavity is divided into air cavity and fluid chamber by free-piston, and driving piston is in fluid chamber, freely
Between the outer peripheral surface and inner cavity of piston have sealing ring, it is characterised in that: offered on the outer peripheral surface of the free-piston to
Lack one group of cricoid pit, is marked with lubricating grease in the pit.
By adopting the above technical scheme, it by the way that cricoid pit is arranged on the outer peripheral surface of free-piston, and is infused in pit
Enter lubricating grease.In use, one side lubricating grease can apply lubricating grease with the sliding that free-piston is in inner chamber of cylinder block
It smears on internal chamber wall, its surface then can uniformly stick lubricating grease when sealing ring slides with free-piston；On the other hand when lubrication
When having impurity in rouge or in cylinder body, impurity can be incorporated in pit with movement, will not cause to damage to sealing ring, together
When ensure that the normal operation of free-piston.
The utility model is further arranged to: free-piston includes annular body, annular body direction driving piston
One end has the raised spherical surface extended towards driving piston, and the other end is cavity.
By adopting the above technical scheme, setting promotes the moving process of free-piston more smoothly in this way.For gas chamber capacity
Adjusting it is more stable, adjustment speed is more rapid.
The utility model is further set to: being offered in the middle part of the outer peripheral surface of free-piston and is put for what sealing ring was placed
Slot is set, longitudinal two sides that free-piston outer peripheral surface is located at setting placing groove offer the pit that can inject lubricating grease respectively.
By adopting the above technical scheme, setting in this way can enable sealing ring quick and more uniform by smearing lubricating grease.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the portion the I enlarged diagram of Fig. 1.
Specific embodiment
A kind of single cylinder double-piston hydraulic damping device as shown in Figure 1 and Figure 2 includes column and the cylinder with inner cavity 11
Body 1, cylinder body 1 is interior to be had free-piston 2 and extends to the driving piston 3 in cylinder body 1, and driving piston 3 is driven by piston rod 31,
Inner cavity 11 is divided into air cavity 111 and fluid chamber 112 by free-piston 2, and driving piston 3 is in fluid chamber 112, free-piston 2
Outer peripheral surface and inner cavity 11 between there is sealing ring 4, at least one set of cricoid pit is offered on the outer peripheral surface of free-piston 2
21, lubricating grease 5 is marked in the pit 21.In above scheme, by the way that cricoid pit is arranged on the outer peripheral surface of free-piston 2
21, and lubricating grease 5 is injected in pit 21.In use, one side lubricating grease 5 can be in cylinder body 1 with free-piston 2
Lubricating grease is applied on internal chamber wall by the sliding in chamber 11, its surface then can uniformly stick when sealing ring 4 slides with free-piston 2
Attached lubricating grease；On the other hand when having impurity in lubricating grease 5 or in cylinder body 1, impurity can be incorporated in pit with movement
In 21, sealing ring 4 will not be caused to damage, while ensure that the normal operation of free-piston 2.
In the utility model embodiment, free-piston 2 includes annular body, annular body direction driving piston 3
One end has the raised spherical surface 22 extended towards driving piston 3, and the other end is cavity 23.I.e. free-piston 2 is in bowl-shape, can be promoted
The moving process of free-piston 2 is more smoothly.More stable for the adjusting of gas chamber capacity, adjustment speed is more rapid.
In order to further accelerate sealing ring 4 by smearing lubricating grease 5, confession is offered in the middle part of the outer peripheral surface of free-piston 2
The placing groove 23 that sealing ring 4 is placed, longitudinal two sides that 2 outer peripheral surface of free-piston is located at setting placing groove 23 offer can infuse respectively
Enter the pit 21 of lubricating grease 5.
Claims (3)
1. a kind of single cylinder double-piston hydraulic damping device includes column and the cylinder body with inner cavity, has in cylinder body and freely live
Fill in and extend to the intracorporal driving piston of cylinder, driving piston by piston rod driving, free-piston by inner cavity be divided into air cavity and
Fluid chamber, driving piston are in fluid chamber, have sealing ring between the outer peripheral surface and inner cavity of free-piston, it is characterised in that:
At least one set of cricoid pit is offered on the outer peripheral surface of the free-piston, is marked with lubricating grease in the pit.
2. single cylinder double-piston hydraulic damping device according to claim 1, it is characterised in that: the free-piston includes
There is annular body, one end of annular body towards driving piston has the raised spherical surface extended towards driving piston, and the other end is
Cavity.
3. single cylinder double-piston hydraulic damping device according to claim 1 or 2, it is characterised in that: the free-piston
Outer peripheral surface in the middle part of offer the placing groove placed for sealing ring, free-piston outer peripheral surface is located at longitudinal the two of setting placing groove
Side offers the pit that can inject lubricating grease respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822194281.5U CN209494868U (en) | 2018-12-26 | 2018-12-26 | Single cylinder double-piston hydraulic damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822194281.5U CN209494868U (en) | 2018-12-26 | 2018-12-26 | Single cylinder double-piston hydraulic damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209494868U true CN209494868U (en) | 2019-10-15 |
Family
ID=68153741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822194281.5U Active CN209494868U (en) | 2018-12-26 | 2018-12-26 | Single cylinder double-piston hydraulic damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209494868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555807A (en) * | 2018-12-26 | 2019-04-02 | 浙江戈尔德减振器股份有限公司 | Single cylinder double-piston hydraulic damping device |
-
2018
- 2018-12-26 CN CN201822194281.5U patent/CN209494868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555807A (en) * | 2018-12-26 | 2019-04-02 | 浙江戈尔德减振器股份有限公司 | Single cylinder double-piston hydraulic damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000, No. 333, Jiangnan Avenue, South Shore street, Ruian, Zhejiang, Wenzhou Patentee after: Zhejiang Gold intelligent suspension Co.,Ltd. Address before: 325000, No. 333, Jiangnan Avenue, South Shore street, Ruian, Zhejiang, Wenzhou Patentee before: ZHEJIANG GOLD SHOCK ABSORBER Co.,Ltd. Address after: 325000, No. 333, Jiangnan Avenue, South Shore street, Ruian, Zhejiang, Wenzhou Patentee after: ZHEJIANG GOLD SHOCK ABSORBER Co.,Ltd. Address before: 325000, No. 333, Jiangnan Avenue, South Shore street, Ruian, Zhejiang, Wenzhou Patentee before: ZHEJIANG GOLD SHOCK ABSORBER Corp. |